With virtual machines we can make an educated guess about our initial resource allocation; if it proves inadequate, we can correct it with a few key strokes.

通过使用虚拟机，我们可以对初始资源分配进行合理的估计；如果发现估计值不准确，只需敲几下键盘就可以纠正它。

youdao

By the laws of chance, they should have been able to make a correct guess 50% of the time - and that was the exact level of accuracy seen.

BBC: Cheap wine 'good as pricier bottles' - blind taste test